A Role of Initial Conditions in Spin-Glass Aging Experiments

Details A Role of Initial Conditions in Spin-Glass Aging Experiments A Role of Initial Conditions in Spin-Glass Aging Experiments

2002-02-15

arxiv.org/abs/cond-mat/0202269v2

Physical Review B 67, 184422 (2003)

Physics

Condensed Matter

Disordered Systems and Neural Networks

13 pages, 11 figures

Scientific paper

10.1103/PhysRevB.67.184422

Effect of initial conditions on aging properties of the spin-glass state is studied for a single crystal Cu:Mn 1.5 at %. It is shown that memory of the initial state, created by the cooling process, remains strong on all experimental time scales. Scaling properties of two relaxation functions, the TRM and the IRM (with $t_{w1}=0$ and $t_{w2}=t_{w}$), are compared in detail. The TRM decay exhibits the well-known subaging behavior, with $\mu<1$ and $t_{w}^{eff}>t_{w}$. The IRM relaxation demonstrates the superaging behavior, with $\mu>1$ and $t_{w}^{eff}

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